Anything that is closed source I'm concerned of for my own privacy
Plex isn't open source either
The actual desktop application isn't FOSS. The Web UI is though
Do you guys not have a problem with Stremio not being completely open source? It seems like it is proprietary, yet I would argue that it is currently the best way to stream movies and tv shows if you know which add-ons to use.
Anything that is closed source I'm concerned of for my own privacy